Steam-trap.



J. H. 'MAILHOTJ STEAM TRAP. APPLICATION FILED IUIIEZG, 1915.

Patented Nov. 7, 1916.

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J. H. MAILHOT.

l STEAM TRAP.

APPLICATION FILED )UH-E 26, 1915.

Paten Nov. 7, 1916.

SHEET ATTORNEY- @Lw/gf l. H. MAILHOT.

STEAM TRAP.

' APPLICATION FILED IUNEZG. 1.915.

.1 ,203,639. v Patented Nv. 7, 1916.

lll 32 'y2 3 SHEETS-SHEET 3.

WIT/VESSES:

ATTORNEY la S as .a

. STEAM-TRAP.

Specification of Letters Patent.

. Patented Nov. 7. 1916.

Application med June 26, 1915. seriaino. 36,588.'

To all whom it may concern Be it known that I, J osnrrr H. .MArLHon citizen of the United States, residing at Detroit, county of lVayne, State of Michigan, have invented a certain new and .useful Improvement in Steam-Traps, and declare the following to be a full, clear, and eXact description ofthe same, such asv will enable others skilled in the art to which it pertains to make and use the same, 'reference `being had to the accompanying drawings, which form a part of this specication. v

My invention relates to an improvement in steam traps or water feeders forboilers, shown in the accompanying drawings and more particularly pointed ont in the following specification and claims. v f

@ne object of my invention is to reduce the cost and simplify the general construction of a tilting trap of a type embodying two oscillating, alternately illing and discharging water chambers, adapted to deliver water to a boiler, or to return the water of condensation vfrom a heating system back to the boiler against the steam pressure therein.

@ne feature of the invention consists in the peculiar' construction of the valve controlling the delivery of water to the respective tanks and its alternate discharge therefrom into the boiler, upon .the alternate delivery through a steam valve of like construction of boiler pressure to the tanks.

Another feature of the invention consists in the means employed to cushion the impact of the respective tanks produced by the alternate tilting of the latter.

Other advantages and improvements ywill hereafter appear.

In the drawings accompanying this specificationz-Figure 1, is a longitudinal vertical section of the device, on line 1-1 of Fig. 5. Fig. 2, is an end elevation, with the valve for alternately delivering the water to and from the tanks in section, (taken on line 2-2 of Fig. 3) showing also in section the dash-pots receivingthe alternate impact of the tanks. Fig. 3, is -a fragmentary detail, indicating in horizontal section the construction of the water or steam valve (the valves being of similar construction) controlling the alternate delivery and discharge of water or steam to and from the respective tanks, the arrows indicating water or steam water valve chamber entering the right hand tank and discharging from the left hand tank. Fig. fl, is a view similar tol Fig. 3, with the oscillating casing shifted so that its respective ports are in position to deliver water or steam tothe left hand tank and to discharge the water or steam previously delivered from the right' hand tank, as indicated by the arrows. Fig. 5,`is a cross-sectional view with pipes H, and H broken away and the valve casing J removed, showing the tanks in the act of tilting, as indicated by the arrow and before the iight hand tank is deposited in lits respect-ive dash-pot cradle. Fig. 6, is a perspective view of a packing ring surrounding the ports of the valves.

Referring now to the letters of reference placed upon the drawings :-A, and A', are tiltingtwin tanks supported from belowfat one end by the water pipe connections B and B', in turn conneced with an oscillating D, is a stationary water valve incased within the oscillating chamber C, having` two pairs of ports d, cl', and cl2, Z2-#one of each pair of ports being adapted to establish a connection between the inlet 'pipe F, leading from the heating system and one of the respective tanks A and A", through the pipes B and VB;-the other port of each pair of ports serving to connect the respective tanks A and A', through the pipes B and B', with the pipeG, leading to a boiler (not shown) or other place ofdischarge, upon the ports c, c', and c2, 03,01: the oscillating valve chamber C, registering with the ports d, el, and (Z2, (Z3, as a result of the tilting action of the tanks through the alternate filling and discharging of the latter. The twin tanks A and A', are also supported at their opposite ends by steam pipe connections'H and H, which extend upwardly within the tanks above the predetermined water level therein. KI, indicates a stationary steam valve having two pairs of ports, similar in construction to the water valve D.V 4

J, is an oscillating valve chamber inclosing the valve I, having two pairs of ports, the construction being similar to the oscillating water chamber C.

The ports in the valve I, co-act with the ports in the oscillating` chamber J to alternately Lestablish a steam connection between Cil ing the oscillating t'he respective pipes 'H and H', extending above the Water .level in the tanks A and A', andthe pibe l leading trom the boiler (not shoivn) g and between the tanks and the eX- haust pipe L, tted with a check valve L3. (See Fig. l.) Thus through the alternate tilting of the tanks due to the admission of water thereto, boiler pressure is recurrently established in the respective tanks that the Y Water therein contained may pass by gravity to the boiler, While the varcssure in the previouslyv discharged tank is alternately eX- hausted tliat the Water et condensation troni the heating system may be admitted to the trap.v rlhe Water pipe F, and the steam pipe L, respectively serve trunnions for the oscillating tanks and are in turnfsupported byy the hub standards'll" and L', mounted upon the base plate P.

F2, is a nippleY projecting from the hub standard F', carrying a check, valve F3', i line with the pipe leading from the heating' system, (not shown) through Which Water may pass to the trap vblut which is adapted to close against the return ot Water therefrom.

L2, is a nipple projecting from the hub l standard L',

carrying the check Yvalve L3, through which pressure in the tanks may be alternately released that a fresh chargev of Water may be admitted to the tanks.

M, M', denote standards rising troni the base plate vraving Vali-arcuate shaped top, Which `may be fitted with .roller bearings it desired, to respectively receive the oscillating chambers C and J, carrying the'tanks A and A'. Y .Y

N, is a central standard to Which is pivoted a rocking arni N",

tankswvhen tilted. Y Y

t), (l, denote dash-pots located at opposite ends of the base plate and pivoted thereto.

O', indicates a plunger housed in each dash-pot, and 02, 02, are rods connecting the respective plungers With the ends of the rocking arm i O3, denotes a passage ot oilthrough the latter, and O4, is a spring housedwithin each chamber, adapted to act upon the plunger.

D', denotes aY packing ring see Fiom 6 surrounding the respective port openings in the valve D.V

D2, indicate `springs designedy to maintain the packing rings in contact ivith the Wall ot the. oscillating chamber C. l

D3, designates a packing between the valve D and the liange of the annular ring D', to insureI a tight joint at this point.v

C', indicates a brass or otherbushing, linohainbers C and J.

A2, isa tie rodconnecting the tanks A-A' together. Y

Y Having thus indicated the several 4parts K having arcuateV shaped ends N2, to alternately receive the Y port in the plunger for the by reference letters, the construction and operation of the device will be readily understood. VThe trap is located above the boiler in the usual manner in order that the Water delivered to it may pass by gravity into the boiler.A Suitable piping (not shown) con nects the pipe F, 'controlled by check valve F3, with the returns from the heating system or feed Water supply. /Vater delivered through the pipe F, enters the oscillating valve chamber C, passing thence through the port d, in the valve D, and the port C, in the oscillating chamber C; out through the pipe B', into the elevated tank ik', gradually tllling the latter, (see Fig. 3) being noted that the port cl3, is closed by theV `valve chamber C, (see Fig. 2) when the tank ri', is in its elevated position. llVhen a sucient volume of Water has `entered the tank A', to vercome the Weight of the. tank A, the tanks tilt on their supporting trunnions, which actionV cuts oli'i the suply of Water to the tank A', due to the shitting ot' the port c, inthe oscillating' Vvvater valve chamber C, with reference to the port (Z, in the valve D r-the water being delivered instead through the ports cl2, and c2, and thence by the pipe B, `to thertank A, now elevated, as will hereafter be more fully explained, While the Water in the' tank A', (now depressed) Will pass' by gravity out through the'pipeB', the ports c3, d3, the pipe Gr, to the boiler, (see Fig. 4) as Will be more fully explained. Y i

Attention is no'iv directed to the oscillating steam valve chamber through Which steam may pass from ther boiler tothe respective tanks to establislrboiler pressure therein. As previously stated, the construction of the fsteanivalve and Yits (3o-acting parts is similar to thatV of the Water ifalve and its co-acting parts'theref0re upon the tank A', tilting under the Weight oi Water contained therein, .steam passing through the pipe l, Vis delivered throughfports in the valve l, and chamber J, to' the pipe H kand conveyed thereby into the tankA' above the Waterlevel therein, establishing boiler pressure Within the tank-and thereby permitting the VWater to pass by gravity out through the pipe B', through the port c3, through the port (Z3, through the port G, to the boiler.

lilhile the tank A' is discharging its contents into the boiler, the tank A is being' lilled by the returns `from the heating system or other source Vot' supply and as soon as the iveight of Water inthe tankri, overtank A V( see Fig. 4), establishing boilerpressure Within, permitting theV Water therein to pass by gravity out through the ports c',

" through the ports upon the base,

- ing thence through the check valve I3, to

the atmosphere, or to a sewer or other conncction5-the, object being to free the tank of pressure that water may again enter the tank. rIhe jar which might otherwise result from tilting the tanks is absorbedl thro-ugh the rocking arm N', co-acting with the dash-pots G, O, the plungers of which are respectively linked to the ends of thc rocking arm. The dash-pots are lilled with oil and it will be obvious that upon the tanks alternately striking opposite ends of the arm N, it will cause the latter to rock, thereby actuating the pistons, forcing the oil in the chambers to pass back andforth G3, as the pistons alternately reciprocate, checking the force of the impact which is further relieved by the jpring located within each dash-pot cham- I-Iaving thus described my invention, what I claim is l. In an apparatus of the character described, a base plate, a pair of oscillating valve chambers spaced apart and supported upon the base, a pair of tanks, pipe connection between the oscillating valve chambers and the tanks, each valve chamber having two pair of ports, each pair of ports communicating with one ot the pipes leading` to the tanks, and a stationary valve housed in each oscillating valve chamber having two pair of ports adapted to co-act with the ports of the respective valve chambers, whereby water and boiler pressure may be delivered alternately to the respective tanks and discharged therefrom.

2. In an apparatus of the character described, a base plate, valve chambers spaced apart and supported a pair of tanks, pipe connection between the oscillating valve chambers and the tanks, each valve chamber having two pair of ports, each pair of ports communieating with one of the pipes leading to the tanks, means for conveying water to one of the oscillating valve chambers for delivery to the tanks, means for conveying boiler pressure to the other oscillating valve chamber for delivery to the tanks, means for conveying the water discharged from the tanks to the boiler, and means for discharging the boiler pressure leased through the operation of one or the oscillating valve chambers.

3. In an apparatus of the character described, a base, a pairof oscillating valve chambers spaced apart and supported upon the base, a pair of tanks, pipe connections between the oscillating valve chambers and the respective tanks, each of said oscillating a pair of oscillating' Jfrom the tanks when re-v valve chambers provided with two pair of ports, each pair of ports communicating with one of the pipes leading to the tanks, a stationary valve housed within each oscillating valve chamber having two pair of ports adapted to co-act with the ports of its respective oscillating valve chamber to establish communication respectively with the boiler and with a water supply pipe, and between 'the steam space 'of the boiler and exhaust pipe, said valves being operably connected with the tanks whereby one of the valves will alternately deliver and discharge water into and from the respective tanks while the other valve admits steam into one tank while exhausting steam from the other tank, a pipe for delivering water to one of the oscillating valve chambers, a check valve to close against the return of said water, means for delivering the water from the respective tanks to the boiler under the control of the oscillating valve chamber, an exhaust pipe for delivering steam from the respective chambers, under control of the other oscillating valve chamber, and a check valve to close against the return of the exhaust, substantially as described.

4. In a device'of the character described, a base plate, a pair of oscillating valve chamf bers supported from the base, a pair o tanks, pipe connections between the oscillating valve chambers and the tanks adapted to support the tanks and to provide comn'iunication between the valve chambers and the tank, each ot said oscillating valve chambers having two pairs of ports, a stationary valve housed in each of the oscillating chambers, having two pairs of ports coacting with the ports of the respective oscillating chambers inclosing means Jor conveying water to said chamber Jfor alternate delivery thereby to the tanks, means for delivering steam from .the boiler through the other oscillating valve chamber to the tanks alternately, means for cushioning the impact of the tilting tanks, comprising a rocking arm supported by the base having ends adapted to alternately receive the tanks, a pair of disconnected fluid chambers spaced apart and pivoted to the base, a plunger adapted to reciprocate in each of the fluid chambers perforated for the passage of the fluid, and connecting rods engaging the plunger and the respective ends of the rocking arm.

5. In an apparatus of the character described, a baseplate, a pair of oscillating valve chambers supported from the base, a pair of tanks, pipe connection between the oscillating valve chambers and the tanks, each valve chamber having two pair of ports, each pair of ports communicating with one of the pipes leading to the tanks, a stationary valve housed in each oscillating valve chamber having twov pair of ports the valves,

adapted toco-act with the ports of the rethe ring in Contact with the Wall of the valve spective valve clmmbers,'Wliereby Water and chamber. v v

boiler pressure may be delivered alternately ln testimony whereof, I sign this specito the respective tanks and discharged Jhereeution in the presence of jawo Witnesses.

fi from, an adjustable packing ring surround- JOSEPH H. MAILHOT.

ing each of said port-s, having an inwardly Witnesses: Y projecting flange extending into the sta- SAMUEL E. THOMAS, Y tionary valve, and resilient elements to force GRACE KYLE.

VCopies of this patent may be obtained for ve cents each, by a.d..1essingA the VCommissioner of' Patents Washington, D. C. 

